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Finding the Fourth Proportional to 1,964,759.20, 2,711,363.08 and 1,105,319.20

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Solution

The fourth proportional to 1,964,759.20, 2,711,363.08 and 1,105,319.20 is: 1,525,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,759.20 : 2,711,363.08 = 1,105,319.20 : x
  2. Step 2: Convert to fraction form
    1,964,759.20/2,711,363.08 = 1,105,319.20/x
  3. Step 3: Cross multiply
    1,964,759.20x = 2,711,363.08 × 1,105,319.20
  4. Step 4: Simplify right side
    1,964,759.20x = 2,996,921,670,495.14
  5. Step 5: Solve for x
    x = 2,996,921,670,495.14/1,964,759.20
  6. Step 6: Final answer
    x = 1,525,337.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.